Controlling system for receiving apparatus.



A. D. OARDWBLL.

CONTROLLING SYSTEM FOR RECEIVING APPARATUS.

APPLICATION FILED NOV.14, 1911. RENEWED UB0. 5, 1912.

1,070,945, Patented Aug. 19, 19

WW I $3 6M relay A ener ized until the breakin of Any suit-able arrangement or sequence of impulses may be adopted and the apparatus and its method of operation will be readily understood by assuming that the working magnets A, E and F, G are to be energized. requiring, according to the system adopted, a short positive, a long negative, and a short positive impulse to energize said magnets in the sequence given. The first or short positive impulse on the main line a will close contact 1, thus completely closing and energizing a working circuit from local battery to point- 4, tongue 3 of main line relay L, contact 1, normally closed contact 5, normally closed contact 6, point 7, through working magnet A, point 8, point 9; also from point 7 through relay A in multiple with the working magnet A to point 9, to point 10, through left hand winding of relay 0 to ground When magnet A is thus energized, it performs the work required of it which, in the particular instance described in my previous application, is to advance a type wheel the first step toward printing position. Relay C, responding only to a long impulse, will not he sufliciently energized to attract its armature.

When relay A is energized, it closes a contact 11 in a second or holding circuit, but said circuit will not be energized as long as the line relay contact 1 remains closed, principally because of the resistance of the switching relay R- which is included in the holding circuit. The holding circuit, however, will be energized upon the break ing of the first impulse, and may be traced as follows: from point 4 through normally closed contact 12, point 13, point 14, through shifting relay R to contact 1], closed when relay A is energized on the closing of contact il, armature of relay A, through relay A, and working magnet A in multiple therewith, to point 9, to point 10, left-hand winding of relay C", toground This circuit through the switching relay R will maintain said relay and the working magnet A and the final impulse. When shifting relay R is thus energized, contact 15 will be closed so that current will tiowirom point 10 directly to ground an, short-circuiting the left-hand winding of relay C so that it will not be operated by the holding circuit. The movement of the armature of relay R which closes contact 15 will open the normally closed contacts (5 and 16 and, close the normally open contacts 17 and 18, thus shitt- 1 ing the circuits of the line relay contacts 1 y and 2 to the second group of magnets and 1 their crrresponding relays.

The second impluse will energize the magnets E and F and, under the assumption stated, being a long negative, line relay l contact 2 will be closed, thus closing an operating circuit and a holding circuit for the magnet or magnets of the second group which areto be energized, although, similarly to the holding circuit before described in connection with the first group of magnets, current will not operate relay S in the second holding circuit until contact 2 is opened. The operating circuit is as follows: point 4 to contact 2, to normally closed contact 19, to previously closed contact 18, to point 20, through working magnet E and relay E in multiple therewith, to point 21, closing contact 22, to point 23, left-hand winding of relay F, to ground 00 Since this is a long impulse, relay F will be operated, closing contact 2 1 and permitting thereby current to flow from point 1 through normally closed contact 12, to point 13, to point 25, through working magnet F to contact 24, armature of relay F, through right-hand winding of relay F, thus hold ing its armature attracted, to ground m When the magnets E and F are thus ener gized, they in turn will perform the particu lar work required of them,- which, if in a telegraph typewriter of the character described in my said previous application, will advance the type wheel its second step toward printing position.

The holding circuit through switching relay S, which will be closed on the closing of contact 22, but through which current will not flow until the second impulse is broken, may be traced asdt'ollows: from point 4* through normally closed contacts 12, point 13, point 25, through relayS to contact 22 of relay E, which was closed on the coming in of the second impulse, through relay E and working magnet E 'n multiple therewith, to point 21, to point 23, through left-hand winding of relay F to ground m, thereby operating switching relay S to close the normally open contact 26 and to open the normally closed contacts 5 and 19, and to close the normally open contacts 27 and 28, thereby switching the line relay contacts 1 and 2 to the third group of working magnets and their relays. At the same time the lefthand winding of relay F is short-circuitcd and the current flows from point 23 through contact to ground m The third and final impulse, under the conditions stated, bein a short positive, an operating circuit wil. be closed through which current will flow as follows: from point 4 contact 1, contact 27, which as stated, was closed on the breaking of the second impulse, point 29, working magnet G and relay G in multiple therewith, point 30, point 31, left-hand Winding of relay 1 to ground m. This being a short impulse, relay I will not be sufiiciently energized to attract its armature. \Vhen magnet G is thus energized, it performs the work re-- quired of it, which, in the assumed use, will be the movement of the type wheel to its nezopazs ultimate printing position. This being the final impulse preparatory to the accomplish ment of the result desired, which result is attained on the breaking of the final im pulse, a circuit is established through a relay T, when contact .33 is closed but throu h which current iloes'not lion until third impulse is orohen. owing principally to' the resistance of relay T, as follows: point 4*, closed contacts point l3. point relay T. Contact 33. armature of relay G", through relay G and magnet G to point 30 point ill. through left hand vii'idingr oi" relay 1' to grountlw.

For the purpose of illustration. l have shown a magnet-J carrying on its arma ture K a hammer ll. said armature being attracted when magnet .l is energized on the breaking of the final impulse to etl'ect the printin of the selected ('llttln iltl. (in the breaking; of the final impulse. relay '1 will be operated to close contacts 34- and 235', the former short. ciri' ailing; the left. hand Wliil ing of ,relay l and the latter chasing; the circuit of printin magnet .l. The instant hammer L delivers its blow. the free end oi armature K will separate contacts 12,-thus openingi all of the holding! circuits and restoring the mechanism to normal condition. 'hen relay T is tici nergizeti. cont cts 33 will be separated. thus deenergizingr magnet J. Armature K will then be retracted hy its spring and contacts 12 permitted to close.

Although I have described as a particular use of the present invention the recording of a character or signal set. up at thc transmitting station. it is obvious that the magnet J instead oi operating a hammer of a typewriter apparatus may be connected t mechanism which will set a visual signal. or Will set in operation an audible Any suitable .sttjlttlfl'l of impulses may be adopted for the purpose of closing the circuits of the working magnets selected. For instance, there may be adopted for transmis-- sion over the main line a. positive and m;-"ative impulses for short or long duration. either or each of which may he mnhineii in any desired manner for each charactertransmitted or each function performed. three impulses of similar duration and oil similar polarity following each other. to cause one operation of the system: three impulses, two of similar polarity and duration and one of a different polarity or duration. and so on. for eti'ccting operation of the system. In the example illustrated hayint three sets of relays controlled by any do sired group of three line impulses. sixlyfour combinations of impulses may be carried out, and if more sets of relays are in stalled in the system. the number of combinations of impulses will he inm'eased in proportion.

From the foregoing description. the cir cults for any particular set of working magr nets may be readily traced. it being undcrstood that on the closing: of a line relay con ta t two circuits will be established; first. an operating circuit through which current will iimncdiately flow to energize the lected working magnet and to cause it to perform the work required of it. and also to energize the correspon 'li11;: relay to close a contact in a holding circuit through which holding circuit current will llow on the opening of the line relay contact; and second. that when current flows through the holding circuit. thev switcning relay will be eriergireil to shift the circuits of the line relay contacts to the next succeeding group of working magnets and their relays. The system thus differs from that of my said former application in that in said former application the closing oi" line relay contact does n t directly close a circuit thrimgh the selected 'fvorking magnet. but thri' ugrh the cori'epiau'lingr'relay which closes the circuit of the magnet.

lla ii'ig now descriliwl my intention what. I claim is 1. 3t controlling system of the character lescri eil coin n'ising a plurality of groups of working magnets. an operator; circuit and a holding! circuit for-each group of magnets. means for energizing the operating circuit and for limiting the ilon of current through the holding circuit until the o nuating: circuit is optimal.

controlling system of the character described comprising a plurality of groups of Working magnet ail-operating circuit and a holding circuit fiir each group. means for energizing the operating circuit. and a resistance in the holding circuit. to limit the tlow of current therethrough until the op'erating circuitiis opened.

3. A. controlling system oi the character described comprisinn a plurality of groups of marking magnets. an operating circuit and a holding circuit including said magnets. a. line relay and cmitacts therefor. means whereby when a line relay contact is closed an operating circuit and a holding circuit will be closed through a selected magnet audits relay. and me to limit the (low of current, through the holding circuit until the line Conta t is opened.

4. A controlling system of the character de cribed. comprising a plurality of groups of Working iii-agnets. means for selectively energizing a magnet or magnets of each group and at the same time closing: a holding circuit through said magnet or magnets, and means to permit operation of the holding circuit when the energizing circuit is open.

A controlliim system of the ciiarartcr described "comprising a plurality ot' 'groups of Working magnets, an operation ircuit and a holding circuit for each group of triagnets, means for simultaneously closing the operating circuit and the holding circuit through a magnet or magnets of a group, and means to permit ()PBltItlGll of the hold ing circuit when the operating circuit is open.

6, A controlling system of the character described comprising a plurality of groups of Working magnets, groups of relays corresponding to said magnets, an operating circuit and a holding circuit for each group of magnets and their corresponding relays, means for closing the operating circuit of a magnet or magnets of a group and energizing the corresponding relay to close a corn tact in its holding circuit, a relay in said holding circuit, and means to permit opera tion of said -relay when the operating circuit has been opened.

7. A controlling system of the character described comprising a plurality of groups of working magnets, an operating circuit and a holding circuit for each group of magnets, a line relay and contacts therefor, switching relays in said holding circuits, and means for closing a contact in a holding circuit When the operating circuit is energized upon the closing of a line relay contact, thereby short circuiting the corresponding switching relay While the line relay con tact is closed.

8. A controlling system of the character described comprising a plurality of groups of working n'iagnets, an operating circuit and a holding circuit for each group of magnets, a line relay and contacts therefor, switching relays in said holding circuits, means for closing a contact in a holding circuit When the operating circuit is energized upon the closing of a line relay contact, thereby short circuiting the corresponding switching relay While the line relay contact is closed, and means for maintaining the holding circuits closed until all of the operating circuits have been energized.

S). A controlling system of the character described comprising a plurality of groups of Working magnets, groups of relays corresponding to said magnets, an operating circuit and a holding circuit for each group of said magnets and relays, the corresponding Working magnets and relays being subject to the same impulse, a line relay and contacts therefor, a switching relay in the holding circuit, and a normally open contact in said holding circuit adapted to be closed when a selected Working magnet relay is en ergized.

10. An electric circuit controlling system comprising a Working magnet, a relay corresponding to said magnet, an operating circuit for the magnet and for the relay, a holding circuit for the magnet and for the newness 'relay, means for closing the operating cirrelay when the operating circuit is closed,

and a circuit ctmtrolled bythe last named relay,

1].. A controlling system of the character described comprising a plurality of groups of working i'nagnets, an operating circuit and a holding circuit for each group of magnets utilizing the same Winding of each magnet, means for energizing the operating circuit'and for limiting the How of current through the holding circuit until the operating circuit is opened.

12''. A controlling system of the character described comprising a plurality of groups of Working magnets, an operating circuit and a holding circuit including said magnets utilizing the same Winding of each n'iagnet, a line relay and contacts therefor, means whereby When a line relay contact is closed an operating circuit and a holding circuitwill be closed through a selected magnet and its relay, and means to limit the flow of current through the holding circuit until the line contact open 13. A controlling system of the character described comprising anplurality of groups of Working magnets, an operating circuit and a holding circuit including said magnets, :1 line relay and contact therefor, said circuits utilizing the same windings in said magnets and relays respectively, means whereby when a line relay contact is closed an operating circuit and a holding circuit will be closed through a selected magnet and its relay, and means to limit the flow of current through the holding circuit until the line contact is open.

14'. A controlling system of the character described, comprising a plurality of groups of working magnets, groups of relays con responding to said. magnets, an operating circuit and a holding circuit of each group of magnets and their COITESPOfldiDg relays utilizing the same windings oi? the magnets and relays respectively, means for closing the operating circuit of a magnetor magnets oil a group and energizing the corresponding relay to close a contact through its holding circuit, a relay in said holding circuit, and means to permit operating of said relay when the operating circuit has been opened.

15. An electric circuit Ctll'llltllllng system comprising a Working magnet, a relay corresponding to said magnet, an operating circuit for the magnet and for the relay, a holding circuit for the magnet and for the relay, means for closing the operating circuit cl said magnet and energizing said relay to close a contact in their holding cirltlt) ll l cuits'simultaneously, a relay in said holding Signed at New York city, in the county circuit, means to prevent operation of said of New York, and State of New York, this relay when the operating circuit, is closed, 13th day of. November, A, D. 1911.

means to maintain closed the circuit of said ALLEN D. CARDWELLL relay when the operating circuit of said first Witnesses:

named relay is broken, and a circuit con- MAX M. KOTZEN, trolled by the second named relay. T. E. BOURNE. 

